Sharma was inaugurating an exhibition at the National Archive Museum here commemorating 70 years of the state's accession to India.
The exhibition has on display war diaries with operational details of the Indo-Pak war of 1947-48, original letters, telegrams, documents, and citations.
All these have been publicly shared by the Ministry of Defence for the first time.
"Maharaja Hari Singh, when he signed this instrument (of accession), only after that, I repeat, only after that, the Indian forces went to that area. This needs to be showcased," he said.
"..and that has been rightly showcased by this exhibition through the pictures," said Sharma.
He urged the youth to visit the exhibition to know more about the accession of then 'riyasats' (princely states) to the Indian Union.
"This is what our Prime Minister Narendra Modi's vision is of 'ek bharat, shreshta bharat' (United India, superior India)," he said.
"And more such replies will follow," said Sharma.
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